Electric fan



FIG. 1 is a perspective view of an electric fan showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings illustrate parts of the electric fanthat form no part of the claimed design.

CLAIM The ornamental design for an electric fan, as shown and described.